Or, y'know, the NX handheld is 2016, since the game seems to be developed primarily for 3DS and ported up from there.

We've seen from Project Cars that literally no third party seems to know what the NX console will be at this point. If what I read was correct, the PS4 version also doesn't have a date/window, so there's also that. This announcement says literally nothing definitive about both what the NX is and when it could be out All we have to go on are trends (which Nintendo only follows with handhelds nowadays) and inferences.